Improvement in tan-vats



S. H. HALL.

l Tan-Vats.

910,150,657. Patented May 5,1874.

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ATTORNEYS.

UNITED STATES PATENT OFFICE.,

SAMUEL H. HALL, OF BELLE PLAINE, IOWA.

. IMPROVEMENT IN TANV-VATS.

Specification forming part of Letters Patent No. 150,657, dated May 5,1874; application filed March 14, 1874.

To all whom it may concern:

Be it known that I, SAMUEL H. HALL, of BellevPlaine, in the county ofBenton and State of Iowa, have invented a new and valuable Improvementin Tan-Vats; and I do hereby declarethat the following is a full, clear,and exact description of the construction and operation of the same,reference being Vhad to the annexed drawings, making a part of thisspecification, and to the letters and iigures of reference markedthereon.

Figure l of the drawing is a representationV of a sectional view of mytan-vat, and Fig. 2 is a plan View of the same.

This invention has relation to racks which are applied inside oftan-vats, and intended for hanging the hides to be treated in thetanliquor. The nature of my invention consists in the application ofstirrers to an oscillating rack,for the purpose of stirring the solidsubstances about in the liquor, and keeping them suspended in it, aswill be hereinafter explained.

In the annexed drawings7 A designates a tan-vat, and A the hinged coverthereof. Inside of this vat, and supported by trunnions t t, is ahorizont-al oscillating shaft, B, which is provided with a lever, G, bywhich it is oscillated. To this shaft B racks D D are rigidly secured,so as to extend out at right angles on each side of it, in which racksrows of pins c are fixed, to which the hides, represented by the letterwb, are attached. The lower ends of the hides are free to swing whenshaft B is oscillated. C C are two pendants, which are rigidly securedto the shaft B near its ends, and sustained by means of inclined bracesc c. The lower ends of these pendants are connected together by a broadat board,

E, which is located near the bottom of the vat.

When the hides b are hung on the pins c, and adjusted in the tanning-liquor in the vat, oscillating motion is given to the frame, whichcauses the hides to swing about in the liquor,l

of two witnesses.

SAMUEL H. HALL. Witnesses:

H. H. HILDENBRAND, J. F. ROBERTS.

